Dispenser having removable container

Abstract

A dispenser for liquids is provided having a container including a bottom opening and an envelope structure surrounding the container. A bottom wall on the envelope structure is adjacent the bottom opening so that liquid from the container will collect in the envelope structure about the bottom opening. A dispensing passage is coupled to the envelope structure and leads from inside the envelope structure below the bottom opening upwardly and terminates outside the envelope structure. At least a portion of the envelope structure is resiliently deformable for deflection to create pressure in liquid in the envelope structure to thereby cause liquid to exit through the dispensing passage.

What is claimed is: 
     
       1. A dispenser for liquids, the dispenser including: a container for a liquid to be dispensed, the container having a bottom opening;   an envelope structure surrounding the container, the structure having an upper part and a lower part coupled to the upper part, at least a portion of the envelope structure being resiliently deformable for actuating the dispenser, and the lower part having a bottom wall and a peripheral wall extending upwardly from the bottom wall;   location structure attached to the bottom wall of the lower part and extending upwardly to support the container with the bottom opening of the container spaced from the bottom wall sufficiently to permit a pool of liquid to accumulate in the lower part with the bottom opening immersed in the liquid thereby trapping liquid in the container; and   a dispensing passage coupled to the lower part and extending upwardly from below said bottom opening and terminating outside the envelope structure whereby a user can actuate the dispenser by deforming said portion of the envelope structure to apply pressure on the surface of the pool of liquid to thereby cause liquid to exit via the dispensing passage and when said portion is released, to cause air to be sucked back into the dispenser and to allow the dispenser to return to the original shape.   
     
     
       2. A dispenser as claimed in claim 1 in which the upper part has a resilient side wall extending upwardly from the lower part of the envelope structure and in which said portion of the envelope structure is a portion of the side wall of the upper part. 
     
     
       3. A dispenser as claimed in claim 1 in which said portion of the envelope structure is a resiliently deformable bellows operable by pushing downwardly on the dispenser to dispense liquid. 
     
     
       4. A dispenser as claimed in claim 1 in which the container includes a neck extending downwardly and terminating at the bottom opening, and in which the location structure and the neck of the container include complementary structure to locate the container in the lower part of the envelope structure. 
     
     
       5. A dispenser as claimed in claim 1 in which the dispensing passage passes through the peripheral wall of the lower part of the envelope structure. 
     
     
       6. A dispenser as claimed in claim 1 in which the dispensing passage passes through the bottom wall of the lower part of the envelope structure. 
     
     
       7. A dispenser as claimed in claim 1 in which the upper and lower parts of the envelope structure are releasably coupled for separation to permit replacement of the container. 
     
     
       8. A dispenser as claimed in claim 1 in which the container is a relatively rigid structure. 
     
     
       9. A dispenser as claimed in claim 1 in which the container is sufficiently rigid to resist negative pressure caused by the weight of the liquid in the container. 
     
     
       10. A dispenser as claimed in claim 1 in which the lower part includes an upright tooth positioned to enter the neck of the container, as the container is assembled in the lower part, for severing a seal over the bottom of the neck. 
     
     
       11. A dispenser as claimed in claim 2 in which the lower part includes an upright tooth positioned to enter the neck of the container, as the container is assembled in the lower part, for severing a seal over the bottom of the neck. 
     
     
       12. A dispenser as claimed in claim 3 in which the lower part includes an upright tooth positioned to enter the neck of the container, as the container is assembled in the lower part, for severing a seal over the bottom of the neck. 
     
     
       13. A dispenser for liquids, the dispenser including: a container having a bottom opening;   an envelope structure surrounding the container and having a bottom wall, the container bottom opening being adjacent the bottom wall so that liquid from the container will collect in the envelope structure about the bottom opening;   a dispensing passage coupled to the envelope structure and leading from inside the envelope structure below the bottom opening upwardly and terminating outside the envelope structure; and   at least a portion of the envelope structure being resiliently deformable for deflection to create pressure in the liquid in the envelope structure to thereby cause liquid to exit through the dispensing passage.   
     
     
       14. A dispenser as claimed in claim 13 in which the container is sufficiently rigid to resist negative pressure caused by the weight of the liquid in the container. 
     
     
       15. A dispenser as claimed in claim 13 in which the container is resiliently deformable and in which said resilient portion of the envelope structure is adjacent the container so that when said resilient portion is deflected, the container may be deflected after engagement of the resilient portion with the container by further deflection of the resilient portion.